====================================== | [ 4976.699867][T19772] eth1: entered promiscuous mode | [ 4976.702805][T19772] ------------[ cut here ]------------ | [4976.703114][T19772] WARNING: CPU: 3 PID: 19772 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) | [ 4976.704304][T19772] Modules linked in: ip6t_REJECT ipt_REJECT nft_compat nf_tables [ 4976.705382][T19772] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [4976.705760][T19772] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) [ 4976.706071][T19772] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 9b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 All code ======== 0: 00 00 add %al,(%rax) 2: 8b 05 77 04 bc 02 mov 0x2bc0477(%rip),%eax # 0x2bc047f 8: 85 c0 test %eax,%eax a: 0f 84 52 fe ff ff je 0xfffffffffffffe62 10: 48 8d bb c0 0c 00 00 lea 0xcc0(%rbx),%rdi 17: be ff ff ff ff mov $0xffffffff,%esi 1c: e8 da fc 9b 00 call 0x9bfcfb 21: 85 c0 test %eax,%eax 23: 0f 85 39 fe ff ff jne 0xfffffffffffffe62 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: e9 30 fe ff ff jmp 0xfffffffffffffe62 32: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 39: fc ff df 3c: 4c 89 fa mov %r15,%rdx 3f: 48 rex.W Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: e9 30 fe ff ff jmp 0xfffffffffffffe38 8: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax f: fc ff df 12: 4c 89 fa mov %r15,%rdx 15: 48 rex.W [ 4976.707138][T19772] RSP: 0018:ffffc900009f6ef0 EFLAGS: 00010246 [ 4976.707513][T19772] RAX: 0000000000000000 RBX: ffff888013572000 RCX: 0000000000000001 [ 4976.707964][T19772] RDX: 0000000000000000 RSI: ffffffff8c310751 RDI: ffffffff8ba58280 [ 4976.708410][T19772] RBP: ffffc900009f6fd8 R08: 0000000000000000 R09: 0000000000000000 [ 4976.708862][T19772] R10: ffffc900009f7008 R11: ffffffff8cd8d1e0 R12: 1ffff9200013ede2 [ 4976.709307][T19772] R13: 00000000000005dc R14: ffffc900009f7008 R15: ffff888013572f48 [ 4976.709757][T19772] FS: 00007f535ca58800(0000) GS:ffff8880de719000(0000) knlGS:0000000000000000 [ 4976.710298][T19772] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4976.710682][T19772] CR2: 00000000004e59f8 CR3: 00000000122b6001 CR4: 0000000000772ef0 [ 4976.711130][T19772] PKRU: 55555554 [ 4976.711351][T19772] Call Trace: [ 4976.711581][T19772] [4976.711737][T19772] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) [4976.712036][T19772] ? __lock_acquire (kernel/locking/lockdep.c:5240) [4976.712341][T19772] netif_set_mtu (net/core/dev.c:9652) [4976.712653][T19772] ? __pfx_netif_set_mtu (net/core/dev.c:9647) [4976.712963][T19772] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) [4976.713228][T19772] br_mtu_auto_adjust (net/bridge/br_if.c:525) [4976.713543][T19772] br_add_if (net/bridge/br_if.c:697) [4976.713775][T19772] ? cycle_netdev (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/netdevice.h:3901 drivers/net/vrf.c:1048) [4976.714075][T19772] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) [4976.714366][T19772] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) [4976.714684][T19772] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) [4976.714986][T19772] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) [4976.715359][T19772] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) [4976.715662][T19772] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) [4976.715956][T19772] ? __kernel_text_address (kernel/extable.c:79) [4976.716252][T19772] ? __lock_acquire (kernel/locking/lockdep.c:5240) [4976.716565][T19772] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) [4976.716871][T19772] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) [4976.717238][T19772] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) [4976.717544][T19772] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) [4976.717839][T19772] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) [4976.718133][T19772] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) [4976.718430][T19772] ? find_held_lock (kernel/locking/lockdep.c:5353) [4976.718734][T19772] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) [4976.719024][T19772] ? __create_object (mm/kmemleak.c:771) [4976.719327][T19772] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) [4976.719632][T19772] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) [4976.719927][T19772] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [4976.720303][T19772] ? __rtnl_newlink (net/core/rtnetlink.c:3907) [4976.720619][T19772] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) [4976.720917][T19772] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) [4976.721214][T19772] ? __lock_acquire (kernel/locking/lockdep.c:5240) [4976.721520][T19772] ? find_held_lock (kernel/locking/lockdep.c:5353) [4976.721836][T19772] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) [4976.722129][T19772] ? __lock_release (kernel/locking/lockdep.c:5539) [4976.722425][T19772] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) [4976.722751][T19772] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) [4976.723047][T19772] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) [4976.723346][T19772] ? __lock_acquire (kernel/locking/lockdep.c:5240) [4976.723658][T19772] netlink_rcv_skb (net/netlink/af_netlink.c:2551) [4976.723960][T19772] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) [4976.724256][T19772] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) [4976.724573][T19772] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) [4976.724866][T19772] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [4976.725161][T19772] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) [4976.725459][T19772] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) [4976.725764][T19772] ? __lock_acquire (kernel/locking/lockdep.c:5240) [4976.726070][T19772] netlink_sendmsg (net/netlink/af_netlink.c:1896) [4976.726366][T19772] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) [4976.726672][T19772] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) [4976.726975][T19772] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) [4976.727269][T19772] ? __pfx_____sys_sendmsg (net/socket.c:2560) [4976.727569][T19772] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) [4976.727950][T19772] ___sys_sendmsg (net/socket.c:2670) [4976.728248][T19772] ? kasan_record_aux_stack (mm/kasan/generic.c:548) [4976.728552][T19772] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) [4976.728919][T19772] ? __pfx____sys_sendmsg (net/socket.c:2657) [4976.729218][T19772] ? find_held_lock (kernel/locking/lockdep.c:5353) [4976.729513][T19772] ? __lock_acquire (kernel/locking/lockdep.c:5240) [4976.729827][T19772] ? find_held_lock (kernel/locking/lockdep.c:5353) [4976.730132][T19772] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) [4976.730433][T19772] ? __lock_release (kernel/locking/lockdep.c:5539) [4976.730746][T19772] __sys_sendmsg (net/socket.c:2700) [4976.731038][T19772] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) [4976.731403][T19772] ? __pfx___sys_sendmsg (net/socket.c:2685) [4976.731720][T19772] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) [4976.732014][T19772] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [4976.732309][T19772] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 4976.732686][T19772] RIP: 0033:0x7f535cc251e7 [ 4976.732994][T19772] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 All code ======== 0: 0e (bad) 1: 00 f7 add %dh,%bh 3: d8 64 89 02 fsubs 0x2(%rcx,%rcx,4) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b9 jmp 0xffffffffffffffc9 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 2e 00 00 00 mov $0x2e,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 89 54 24 1c mov %edx,0x1c(%rsp) 3b: 48 89 74 24 10 mov %rsi,0x10(%rsp) Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 89 54 24 1c mov %edx,0x1c(%rsp) 11: 48 89 74 24 10 mov %rsi,0x10(%rsp) [ 4976.734062][T19772] RSP: 002b:00007ffc6e854978 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 4976.734510][T19772] RAX: ffffffffffffffda RBX: 00007ffc6e8550a0 RCX: 00007f535cc251e7 [ 4976.734969][T19772] RDX: 0000000000000000 RSI: 00007ffc6e8549e0 RDI: 0000000000000005 [ 4976.735411][T19772] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000 [ 4976.735868][T19772] R10: 000000001fc89910 R11: 0000000000000246 R12: 0000000000000003 Finger prints: netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_add_if